The attempt/score/ledger half existed (run_practice -> ClassTally scored vs
gold); nothing consulted the gate to turn earned reliability into a ratifiable
proposal. Adds core/reliability_gate/propose.py (propose_from_ledger +
RatifiableProposal): for each class, license_for(PROPOSE) emits a proposal iff
its conservative Wilson floor (0 below N_MIN=10) clears theta=0.85. Refusals
never penalize; deterministic; PROPOSAL-ONLY (never a serving mutation).
propose_runner.py closes the loop end-to-end with an aggressive sealed scorer
(resolve_pooled): practice 95c/5w/50r -> ONE proposal (additive, reliability
0.8608>=0.85, 95/100); 5 wrongs tolerated but floor held; rest stayed sealed.
The gold-tethered autonomous contemplation: the engine earns the right to ASK,
not to SERVE. 11 failing-under-violation tests.
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